公开(公告)号：US20170078030A1

公开(公告)日：2017-03-16

申请号：US14852803

申请日：2015-09-14

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu Wang ,  Ke Liu ,  Fei Peng

IPC: H04B17/17 ,  H04W24/06

CPC classification number: H04B17/17 ,  H04B17/0085 ,  H04B17/14 ,  H04W24/06 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) including communicating via at least one of multiple available signal channels. Data packets exchanged between a tester and DUT as a normal part of a communication link initiation sequence are selectively exchanged and suppressed to enable testing of the DUT without requiring inclusion of special drivers within the DUT, special test software within the tester or establishment of a synchronized communication link between the tester and DUT. For example, in the case of a Bluetooth low energy transceiver, advertisement, scan request and scan response data packets can be used in such manner.

Abstract translation: 用于测试包括通过多个可用信号信道中的至少一个进行通信的被测试射频（RF）数据分组信号收发器设备（DUT）的方法。 选择性地交换和抑制在测试仪和DUT之间交换的数据分组作为通信链路启动序列的正常部分，以便能够在DUT内测试DUT，而不需要在DUT内部包含特殊驱动器，测试器内的特殊测试软件或同步的建立 测试仪和DUT之间的通讯连接。 例如，在蓝牙低能量收发机的情况下，可以以这种方式使用广告，扫描请求和扫描响应数据分组。

公开(公告)号：US20150192639A1

公开(公告)日：2015-07-09

申请号：US14147159

申请日：2014-01-03

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD

IPC: G01R31/3177

CPC classification number: G01R31/3177 ,  G01M11/00 ,  H04B10/00 ,  H04B10/0731

Abstract: A system and method for testing a wireless data packet signal transceiver device under test (DUT) by using DUT control circuitry separate from a tester to access and execute test program instructions for controlling the DUT during testing with the tester. The test program instructions can be provided previously and stored for subsequent access and execution under control of the tester or an external control source, such a personal computer. Alternatively, the test program instructions can be provided by the tester or external control source immediately prior to testing, such as when beginning testing of a DUT with new or different performance characteristics or requirements. Accordingly, specialized testing of different DUTs while accounting for differences among various chipsets employed by the DUTs can be performed in coordination with a standard tester configuration without need for reconfiguring or reprogramming of the tester.

Abstract translation: 一种用于通过与测试仪分离的DUT控制电路来测试无线数据分组信号收发器设备（DUT）的系统和方法，以在测试仪测试期间访问并执行用于控制DUT的测试程序指令。 测试程序指令可以先前提供并存储以用于在测试器或外部控制源（例如个人计算机）的控制下的后续访问和执行。 或者，测试程序指令可以在测试之前由测试者或外部控制源提供，例如当开始具有新的或不同的性能特征或要求的DUT的测试时。 因此，可以与标准测试仪配置协调地执行不同DUT的专门测试，同时考虑DUT所使用的各种芯片组之间的差异，而不需要重新配置或重新编程测试仪。

公开(公告)号：US20150139023A1

公开(公告)日：2015-05-21

申请号：US14082378

申请日：2013-11-18

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu WANG

IPC: H04L12/26

CPC classification number: H04L43/50 ,  H04W24/06

Abstract: A system and method for testing one or more wireless data packet signal transceiver devices under test (DUTs). Incoming data packets from a DUT are monitored to discern between data packets transmitted as part of a DUT calibration cycle or initial data packets being transmitted as the DUT transmitter circuitry settles at its new settings (e.g., transmit signal frequency or power), and later data packets transmitted following completion of the DUT calibration cycle or settling of the DUT transmitter circuitry. Following identification of these later data packets, the tester is so notified and begins the test procedure, e.g., capturing the data packets for analysis. Meanwhile, the tester has been allowed to remain in active use for other test purposes during DUT calibration cycles and settling intervals, thereby increasing testing efficiency and reducing overall test time.

Abstract translation: 一种用于测试被测试的一个或多个无线数据分组信号收发器设备（DUT）的系统和方法。 监视来自DUT的传入数据分组，以便在作为DUT校准周期的一部分发送的数据分组或当DUT发射机电路以其新设置（例如，发射信号频率或功率）稳定时）发送的初始数据分组之间进行辨别，以及稍后的数据 在DUT校准周期完成之后发送的数据包或DUT发射机电路的稳定。 在识别这些稍后的数据分组之后，测试者被通知并开始测试过程，例如捕获用于分析的数据分组。 同时，在DUT校准周期和稳定间隔期间，测试仪被允许保持主动用于其他测试目的，从而提高测试效率并降低整体测试时间。

公开(公告)号：US20140256268A1

公开(公告)日：2014-09-11

申请号：US13791098

申请日：2013-03-08

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD

IPC: H04B17/00

CPC classification number: H04W24/08 ,  H01Q3/267 ,  H04B3/462 ,  H04B17/0085 ,  H04B17/17

Abstract: System and method for confirming radio frequency (RF) signal connections with multiple devices under test (DUTs) tested concurrently using replicas of a RF test signal. Cabled signal connections between the signal source and the DUTs are monitored by sensing levels of outgoing and related reflection RF signals. These signal levels are compared against similar signal levels when the outgoing RF signals are provided to reference impedances. Alternatively, the cabled signal connections have lengths of known signal wavelengths and the RF test signal frequency is swept such that minimum and maximum time delays between the outgoing and reflection RF signals go through minimum and maximum signal cycles with a difference of at least one full cycle. The reflection RF signal magnitude and phase are monitored, from which peak and valley signal level differences and phase changes are identified to determine return loss and phase changes indicative of DUT connection.

Abstract translation: 使用RF测试信号的副本同时测试的多个待测器件（DUT）确定射频（RF）信号连接的系统和方法。 通过感测输出和相关反射RF信号的电平来监测信号源和DUT之间的电缆信号连接。 当将输出RF信号提供给参考阻抗时，将这些信号电平与类似的信号电平进行比较。 或者，电缆信号连接具有已知信号波长的长度，并且扫描RF测试信号频率，使得出射和反射RF信号之间的最小和最大时间延迟经过最小和最大信号周期，其中至少一个全周期 。 监测反射RF信号幅度和相位，从中识别峰谷信号电平差和相位变化，以确定指示DUT连接的回波损耗和相位变化。

公开(公告)号：US20160301588A1

公开(公告)日：2016-10-13

申请号：US14685120

申请日：2015-04-13

Applicant: Litepoint Corporation

Inventor： Christian Volf OLGAARD ,  Ruizu Wang

IPC: H04L12/26 ,  H04B17/15

CPC classification number: H04L43/0847 ,  H04B17/15 ,  H04L43/50

Abstract: System and method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) to enable use of measured packet error rate (PER) to determine transmit signal quality and thereby estimate error vector magnitude (EVM) of the DUT. By using a reference RF data packet signal transceiver having device characteristics and capabilities similar to the DUT including a low noise figure, in place of a formal test instrument with a significantly higher noise figure, significantly lower power DUT transmit signals can be tested, since the additional SNR is not required to determine transmit signal quality, thereby enabling reliable testing of transmit signal quality of the lower power signals from the DUTs. With a calibrated reference RF data packet signal receiver, a reduction in sensitivity as compared to the calibrated sensitivity indicates a reduced transmit signal quality of the received packet.

Abstract translation: 用于测试射频（RF）数据分组信号收发器设备（DUT）的系统和方法，以使得能够使用测量的分组差错率（PER）来确定发射信号质量，从而估计DUT的误差矢量幅度（EVM）。 通过使用具有与包括低噪声系数相似的DUT的器件特性和能力的参考RF数据分组信号收发器代替具有显着更高噪声系数的正式测试仪器，可以测试显着较低功率的DUT发射信号，因为 不需要额外的SNR来确定发射信号质量，从而能够可靠地测试来自DUT的较低功率信号的发射信号质量。 使用校准的参考RF数据分组信号接收机，与校准的灵敏度相比，灵敏度的降低表示接收分组的发送信号质量降低。

公开(公告)号：US20150358839A1

公开(公告)日：2015-12-10

申请号：US14300358

申请日：2014-06-10

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu WANG

IPC: H04W24/06

CPC classification number: H04W24/06 ,  H04B17/0085 ,  H04B17/29

Abstract: Method and system for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) by monitoring RF data packet signals between a tester and a DUT at a low network media layer, such as the physical (PHY) layer in accordance with the Open Systems Interconnection (OSI) reference model stack. By testing at a low layer, fewer signal conversions and data packet operations are required to perform various basic DUT tests, such as data packet throughput, DUT signal transmission performance, DUT packet type detection without packet decoding, validation of rate adaptation algorithms, and bit error rate (BER) testing.

Abstract translation: 通过在低网络媒体层（例如物理（PHY）层）上监测测试者和DUT之间的RF数据分组信号来测试被测试射频（RF）数据分组信号收发器设备（DUT）的方法和系统 与开放系统互连（OSI）参考模型堆栈。 通过在低层进行测试，需要更少的信号转换和数据包操作来执行各种基本DUT测试，例如数据包吞吐量，DUT信号传输性能，DUT分组类型检测，无需分组解码，速率适配算法验证和位 误码率（BER）测试。

公开(公告)号：US20150253357A1

公开(公告)日：2015-09-10

申请号：US14199607

申请日：2014-03-06

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD

IPC: G01R1/18 ,  H04B17/15 ,  G01R31/28

CPC classification number: H04B17/15 ,  G01R31/2822 ,  G01R31/3025 ,  H04B17/0085 ,  H04B17/29

Abstract: A system and method for enabling automated testing of wireless data packet signal transceiver devices under test (DUTs). One or more DUTs are enclosed inside respective chambers within a shielded enclosure providing electromagnetic shielding for its interior region. Each DUT is powered by an internal power source and its radio frequency (RF) signal port is connected to an external RF signal interface at an outer wall of the shielded enclosure. An anchor at an outer wall of the shielded enclosure enables mechanical engagement with and physical displacement of the shielded enclosure, thereby allowing DUTs to be manipulated using pick and place automation devices for engagement with and connection to automated test equipment. Such test equipment can be assembled into vertically stacked RF signal test stations with which shielded DUT enclosures are engaged by physically mating their respective power and RF signal ports using the pick and place automation device.

Abstract translation: 一种用于实现被测试的无线数据分组信号收发器设备（DUT）的自动测试的系统和方法。 将一个或多个DUT封装在屏蔽外壳内的各个室内，为其内部区域提供电磁屏蔽。 每个DUT由内部电源供电，其射频（RF）信号端口连接到屏蔽外壳外壁上的外部RF信号接口。 在屏蔽外壳的外壁上的锚固件能够与屏蔽外壳进行机械接合和物理位移，从而允许使用拾取和放置自动化设备来操纵DUT以与自动化测试设备接合和连接。 这种测试设备可以组装成垂直堆叠的RF信号测试站，通过使用拾取和放置自动化设备物理地接合其相应的功率和RF信号端口，屏蔽DUT外壳被接合。

公开(公告)号：US20140169182A1

公开(公告)日：2014-06-19

申请号：US13716369

申请日：2012-12-17

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu WANG ,  Erdem Serkan ERDOGAN ,  Mathew PHILIP

IPC: H04W24/00

CPC classification number: H04W24/00 ,  H04L1/1867 ,  H04L1/241 ,  H04L43/50 ,  H04W24/06

Abstract: System and method for facilitating testing of multiple data packet signal transceivers involving data-packet-signal replication and one or more status signals indicating successful and unsuccessful receptions of confirmation signals. Based upon the one or more status signals, one or more control signals cause the replicated data packet signals to be distributed to the devices under test (DUTs) such that, following successful and unsuccessful receptions of confirmation signals, corresponding replicated data packet signals are caused to fail to conform in part or to conform, respectively, with a predetermined data packet signal standard.

Abstract translation: 涉及涉及数据分组信号复制的多个数据分组信号收发机的测试的系统和方法以及表示确认信号的成功和不成功接收的一个或多个状态信号。 基于一个或多个状态信号，一个或多个控制信号使得复制的数据分组信号被分配到被测设备（DUT），使得在成功和不成功接收到确认信号之后，引起相应的复制数据分组信号 分别不符合预定的数据分组信号标准。

公开(公告)号：US20230370172A1

公开(公告)日：2023-11-16

申请号：US17746230

申请日：2022-05-17

Applicant: LitePoint Corporation

Inventor： Chen CAO ,  Christian Volf OLGAARD ,  Ruizu WANG ,  Qingjie LU

IPC: H04B17/00

CPC classification number: H04B17/0085

Abstract: An example process determines a first error vector magnitude (EVM) of a signal output by a device under test (DUT). The process includes adding attenuation on a signal path between the DUT and a vector signal analyzer (VSA), where the attenuation is changeable: measuring, at the VSA, at least two second EVMs for different values of attenuation of the signal output by the DUT, where the at least two second EVMs are corrupted by noise from the VSA, and where each of the at least two second EVMs is based on two or more measurements; and determining the first EVM based on a linear relationship that is based on the first EVM, the at least two second EVMs, and a function based on the attenuation, where the first EVM is without at least some of the noise from the VSA.

公开(公告)号：US20170170916A1

公开(公告)日：2017-06-15

申请号：US14966761

申请日：2015-12-11

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu WANG ,  Zhiyong HUANG

IPC: H04B17/29

CPC classification number: H04B17/29 ,  H04B17/0085 ,  H04L43/50

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) with multiple RF signal transmitters and RF signal receivers capable of concurrent operations. Multiple successions of test data packets from a tester to respective RF signal receivers of the DUT and multiple successions of responsive DUT data packets from respective RF signal transmitters of the DUT to the tester are conveyed such that multiple RF signal transmissions, multiple RF signal receptions, or RF signal transmission and reception are performed at least partially concurrently.